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LTC4089-3 - USB Power Manager

General Description

The LTC®4089-3 is a USB power manager plus high voltage Li-Ion battery charger.

This device controls the total current used by the USB peripheral for operation and battery charging.

Key Features

  • nn Seamless Transition Between Power Sources: Li-Ion Battery, USB, and 6V to 36V External Supply nn High Efficiency 1.2A Charger from 6V to 36V Input with Adaptive Output Control nn 3.95V Float Voltage Improves Battery Lifespan and High Temperature Safety Margin nn Load Dependent Charging from USB Input Guarantees Current Compliance nn 215m Internal Ideal Diode plus Optional External Ideal Diode Controller Provides Low Loss Power Path When External Supply/USB Not Present nn Constant-Current/Cons.

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Full PDF Text Transcription for LTC4089-3 (Reference)

Note: Below is a high-fidelity text extraction (approx. 800 characters) for LTC4089-3. For precise diagrams, tables, and layout, please refer to the original PDF.

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LTC4089-3 USB Power Manager with High Voltage Switching Charger Features nn Seamless Transition Between Power Sources: Li-Ion Battery, USB, and 6V to 36V External Supply nn High Efficiency 1.2A Charger from 6V to 36V Input with Adaptive Output Control nn 3.95V Float Voltage Improves Battery Lifespan and High Temperature Safety Margin nn Load Dependent Charging from USB Input Guarantees Current Compliance nn 215m Internal Ideal Diode plus Optional External Ideal Diode Controller Provides Low Loss Power Path When External Supply/USB Not Present nn Constant-Current/Constant-Voltage Operation with Thermal Feedback to Maximize Charging Rate without Risk of Overheating nn Selectable 100% or 20% Current Limit (e.g., 500mA/100mA) from USB Input nn Preset 3.95V Charge Voltage with ±0.